Siemens QBM3230U03UD : Differential Pressure Transmitter, Field Selectable Pressure Range (Uni/Bidirectional): +/-.3" WC, Field Selectable Outputs: 4-20 mA, 0-5 VDC, or 0-10 VDC, LCD Display, Pushbutton Zero Function, 5-Year Warranty, Made in USA
The sensor acquires differential pressure, overpressure and negative pressure of air and non-aggressive gases when a high degree of measuring accuracy and quality is required. It is also suited for measuring air volume flow via differential pressure, since the output signal can be set to extracting-the-root.
The differential pressure sensor is used for:
- Measuring the differential pressures in ventilation and air conditioning ducts
- Verifying air volume flow
- Monitoring filters and control fans
- Pressure supervision in labs, production, and clean rooms
- Acquiring variable air flow in VAV systems
Specifications
| Connection, electrical | Screw terminals |
| Degree of protection | IP54 |
| Dimensions (W x H x D) | 3.25 x 2.95 x 1.93 in |
| Pressure connection | 0.25" Plastic Tubing |
| Operating voltage | 13.5…33 VDC |
| Analog outputs | 0-10V / 0-5V / 4-20mA (2 Wire) |
| Measuring range | -0.3" to +0.3", Adjustable |
| Connection cable | For use with 1/4 in. push on tubing |
| Display | LCD |
| Connecting thread | Screw terminal strip |
Datasheets
 | Siemens QBM3230U03UD Differential Pressure Sensors Data Sheet |
| Siemens QBM3230 Series Differential Pressure Sensors Mounting Instructions |
| Siemens Environmental Product Declaration |
- Output Signal:
- 4-20 mA, 0-5 VDC, 0-10 VDC
- Pressure Type:
- Differential
- Pressure Ranges:
- 0 to 3 Inch
- Media:
- Dry
- Accuracy:
- 1.0%
- LCD Display:
- LCD Display
- Zero Function:
- Yes
- Range Setting:
- Adjustable
- Communication:
- None
- Series:
- QBM Series
